Adipose-derived mesenchymal stem cell-derived exosomes alleviate overwhelming systemic inflammatory reaction and organ damage and improve outcome in rat sepsis syndrome.

Abstract:

:This study tested the hypothesis that healthy adipose-derived mesenchymal stem cell (ADMSC)-derived exosomes (HMSCEXO) and apoptotic (A) (induced by 12 h hypoxia/12 h starvation)-ADMSC-derived exosomes (AMSCEXO) were comparably effective at alleviating sepsis syndrome [SS; induced by cecal-ligation and puncture (CLP)]-induced systemic inflammation and reduced organ damage and unfavorable outcomes in rats. SD rats were divided into sham control (SC), SS only, SS + HMSCEXO (100 µg intravenous administration 3 h after CLP), and AMSCEXO. By day 5 after CLP procedure, the mortality rate was significantly higher in SS than in SC and HMSCEXO (all P < 0.01), but it showed no significant different between SC and HMSCEXO, between AMSCEXO and HMSCEXO or between SS and AMSCEXO (P > 0.05). The levels of inflammatory mediators in circulation (CD11b/c/Ly6G/MIF), bronchioalveolar lavage (CD11b/c/Ly6G) and abdominal ascites (CD11b/c/CD14/Ly6G/MIF) were highest in SS, lowest in SC and significantly higher in AMSCEXO than in HMSCEXO (all P < 0.001). The circulating/splenic levels of immune cells (CD34+/CD4+/CD3+/CD8+) were expressed in an identical pattern whereas the T-reg+ cells exhibited an opposite pattern of inflammation among the groups (all P < 0.001). The protein expressions of inflammation (MMP-9/MIF/TNF-α/NF-κB/IL-1β) and oxidative stress (NOX-1/NOX-2/oxidized protein), and cellular expressions (CD14+/CD68+) in lung/kidney parenchyma exhibited an identical pattern of inflammatory mediators (all P < 0.001). The kidney/lung injury scores displayed an identical pattern of inflammatory mediators among the groups (all P < 0.001). In conclusion, HMSCEXO might be superior to AMSCEXO for improving survival and suppressing the inflammatory reactions in rats after SS.

journal_name

Am J Transl Res

authors

Chang CL,Sung PH,Chen KH,Shao PL,Yang CC,Cheng BC,Lin KC,Chen CH,Chai HT,Chang HW,Yip HK,Chen HH

subject

Has Abstract

pub_date

2018-04-15 00:00:00

pages

1053-1070

issue

4

issn

1943-8141

journal_volume

10

pub_type

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